Ventilator.



B. A. RUEGNITZ.

VENTILATOR. APPLIOATION FILED 001*, so, 1912.

1,066,055, Patented July 1; 1913.

Attorneys COLUMBIA PLANOLIRAPH cO.,WASmN9ToN, D. c.

BEEN-ARE A. BUEGNITZ, 0E DUBUQUE, IOWA.

j i VENTILATOR. i1 g Specification of Letters Patent.

Patented. July 1, 191? Application filed October 30, 1912. Serial No. 728,713.

To all whom it may concern:

Be it known that I, BERNARD A. Runo- Nrrz, a citizen of the United States, residing at Dubuque, in the county of Dubuque and State of Iowa, have invented a new and useful Ventilator, of which the following is a specification.

My invention relates to ventilating sys' tems and more particularly to a ventilating system for railroad passenger cars.

An object is to provide a ventilator which will remove the impure air from a railroad passenger car and will further be adapted to heat and supply fresh air thereto.

With the foregoing and other objects in view'which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings forming part of this specification,Figure 1 is a sectional view of a railroad car with my improved ventilating system attached thereto. Fig. 2 is a top view thereof. Fig. 3 is a cross sectional view on the line AA. of Fig. 1, and Fig. i is a detail view of the fresh air heating chamber.

Referring to the drawings in which similar reference numerals designate corresponding parts throughout the several views, 10 is a railroad car body having the floor 11 and the roof 12. Upon the roof 12 are arranged the pipes 13-13 which extend the entire length of the car, and are provided at their ends with the flaps or air check valves 1 1-. These valves allow air to escape from and prevent air from entering the pipes 13.

Arranged at various intervals along the pipes 13-13 intermediate of their ends are a number of pipe projections 15 extending downward through the car roof and terminating a short distance beyond the ceiling. These pipe projections are provided with the manually operated valves 16, these valves being provided for use only in extreme weather conditions. The funnels 16-46 are located between the pipe ends and the last pipe projection 15, there being one funnel for each pipe 1313. These funnels are locate at opposite ends of the two pipes and point in opposite directions as more clearly shown in Fig. 2. The funnels are provided with screens (not shown) at their outer enlarged ends in order to prevent any foreign material from entering therein. The funnels ends enter the pipes 1313 and extend for a short distance there in, the pipes 13-13 are enlarged from this juncture to the end in order to accommodate the increased volume of air carried by said pipes.

The operation of this portion of the ventilating system is as follows :-With the car traveling at a moderate rate of speed air will be forced into the funnel which faces in the direction in which the car is traveling and which air will pass through the en larged pipe portion and escape through the check valve. The air during such passage will, as is well known in pneumatics tend to create a vacuum within the pipe 13 and as the check valve remote from the funnel will automatically close to prevent air from entering therein, the impure air surrounding the pipe projections within the car will be drawn into the pipes 13. That funnel which faces in an opposite direction to that in which the car is traveling will have a partial vacuum formed adjacent its enlarged end which will further tend to draw the impure air from the car, both check valves in this case being automatically closed as the check valves are arranged to prevent air from entering therein.

Having thus arranged for the disposal of the impure air from the car, I further provide a means by which fresh air may be admitted thereto and which fresh air will be heated as will be hereinafter described. Two fresh air supplying systems are installed upon each car and are similar in every respect with the exception that one system is designed to operate with the car traveling in one direction while the other system is designed to operate with the car traveling in the opposite direction. A description of one therefore will, with the above exception, apply to both.

A fresh air inlet opening 17 is provided in one of the end walls of the car and is connected by means of the pipe 18 which extends downwardly and across the car floor, to an air heater 19. This air heater is composed of a number of similar enlarged compartments 19 connected by restricted passages 20. This air heater is positioned ad jacent the car 'adiator 21 which is of the usual type and construction and will therefore need no further description. The pipe 22 leads from the said heater and is connected to the enlarged air supply member 2-3 which member, as shown in Fig. 3, is provided with a screen 24 which prevents any foreign material from entering the car. By providing the air heater with the spaced compartments as shown and described, the air upon entering the car will be given time to be amply heated before leaving said air heater. A screen (not shown) is provided in the opening 17 which will etlectually pre vent any material from entering the various pipes of the ventilating system and therefore all danger of the latter becoming stopped up will be prevented.

Having thus fully disclosed and described my invention, what I claim to be new and original with me is A car ventilator comprising a pipe extending longitudinally of the car root and terlninating adjacent the ends thereof the said pipe provided with one end thereof closed and the other end gradually enlarged and of conical contour, a check valve positioned at the enlarged end of said pipe allowing the escapement and preventing the ingression of air tubes extending through the car root communicating with the interior of the car and with the said longitudinally extending pipe intermediate the enlarged and closed ends, a funnel adjacent the enlarged pipe end and with the opencend thereof tacing the closed end of said-pipe, said tunnel extending within and communicating with the said enlarged pipe end intermediate the said tubes and the enlarged end of said pipe, said tunnel adapted to create a vacuum within the said pipe with the car traveling in one direction and adapted to create a vacuum external the end thereof when the car is traveling in the other direction to thereby Copies of this patentmay be obtained for five cents eaclnby addressing the Commissioner of Patents, Washington, 1). C. 

